采用塑性铰线理论，对三种可能的塑性铰线形式分别进行分析，得到极限承载力的解析式。
Using plastic yield line theory, three yield line patterns are analysed and the formulas of the ultimate bearing capacity are obtained.
采用插值近似，建立了空洞闭合的解析模型，发现空洞变形的主要机理来自于空洞周围基体材料的塑性流动。
Based on an approximate interpolation scheme, an analytical model for void closure in nonlinear plastic materials was established.
在许多塑性变形情况下，速度场比较容易用解析法获得。
In many plastic deformation cases the velocity field is rather easily solved by analytical method.
应用参变量变分原理推导了复合模量在弹性及塑性状态下的解析解。
The analytical solutions of composite modulus in both elastic and plastic conditions are deduced by applying parametric variational principle.
在某些简化假定的前提下，导出了流体对园柱壳塑性动力反应影响的解析解和主要参数之间的关系。
Under some simplify conditions, an analytic solution and a relationship among main parameters have been obtained for the influence of fluid on the dynamic plastic response of the cylindrical shell.
基于梯度塑性理论，考虑了应变局部化，提出单轴拉伸条件下岩样全程应力—应变曲线解析解。
Analytical solution of complete stress-strain curve of rock specimen in uniaxial tension is proposed based on gradient-dependent plasticity considering strain localization initiated at peak strength.
用塑性理论求得杯形件拉深成形工艺过程中凸缘部分的应力与应变分布的解析解。
The paper mainly focuses on the analysis of the distribution of stress and strain in the flange of a cup-shaped part during deep drawing, according to the plastic mechanics theory.
基于全量塑性理论及膜应变假定，推导了轴对称情况的解析计算模型；
Then an analytical model for axisymmetric case is developed based on the total strain theory and membrane assumption.
而厚壁封头冲压成形过程属于几何非线性和材料非线性的问题，很难用弹塑性力学理论的解析法进行研究。
The drawing process of thick wall is a problem of geometry non-linear and material non-linear, so it is very difficult to be solved by the method of elasticity and plastics mechanics.
对于考虑介质与结构弹塑性性质的课题，解析解更难以求得。
The problem becomes more sophisticated when elastoplastic properties of rock mass and structures are considered.
分析弹性剪切力和塑性剪切力的形成及特征，剖析以往解析分析中存在的问题。
The formation and characters of elastic shear force and plastic shear force are analyzed.
本文采用弹塑性有限元法和解析法，对分离机转鼓的主要零件进行了超速自增强的变形分析。
The deformation analysis of the main parts of the disc-separator bowl is performed for the overspeeding process using elastoplasticity FEM and analytical method.
运用有限应变理论，可以将球孔扩张塑性区内的平均体积应变以解析方法导出，方便了数值化计算。
By incorporating the theory of finite strain, the model is capable of evaluating the mean volumetric strain analytically, thus facilitating the procedure of numerical calculation.
利用可考虑局部破坏的非线性弹塑性有限元，对无加筋和加筋砂土的平面应变压缩试验结果进行了从小变形到破坏的全过程数值解析。
Numerical analyses of plane strain compression tests for the geogrid-reinforced sand specimens were conducted by the nonlinear elastoplastic FEM considering strain localization.
有限元解析中所采用的砂土本构模型以修正塑性应变能量为硬软化基本参量，它可以较为精确地模拟砂土的应力路径效果。
The constitutive model is developed to have a stress path-independent work-hardening parameter based on the modified plastic strain energy concept.
有限元解析中所采用的砂土本构模型以修正塑性应变能量为硬软化基本参量，它可以较为精确地模拟砂土的应力路径效果。
The constitutive model is developed to have a stress path-independent work-hardening parameter based on the modified plastic strain energy concept.
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